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Patent EP0077552A1 successfully refreshed from Google Patents.
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EP0077552A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Colored oil

Assignee: Panasonic Holdings Corp
•
Filing: 1982-10-16
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Granted: —
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Expires: 2002-10-16
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Abstract

Abstract The present invention provides colored oil having a wide variety of color, which is easily produced by coloring a liquid organic compound. According to the present invention, even aliphatic hydrocarbons such as kerosene and gasoline which cannot or hardly be colored by usual manners are easily colored. The colored oil of the present invention comprises a colorant medium, a liquid organic compound having no compatibility with the colorant medium and a colorant (A) having an affinity to the colorant medium but no or little affinity to the liquid organic compound, and the colorant medium containing the colorant (A) is dispersed in the liquid organic compound. The liquid organic compound may contain a colorant (B). The colored oil of the present invention can easily be prepared by a very simple manner for dispersion.

Inventors

  • 👤 Keiichi Yubakami
  • 👤 Hiromu Matsuda
  • 👤 Mamoru Soga
  • 👤 Nobuo Sonoda
  • 👤 Wataru Shimotsuma

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 13:41
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/003; C09; C09B; C09B67/00; C09B67/0071; C10M; C10M171/00; C10M171/007; H; H01; H01F; H01F1/00; H01F1/44

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 87 words
A colored oil which comprises (1) a colorant medium being one selected from the group consisting of water, alcohols, cellosolves, ketones, and ethers , (2) a liquid organic compound having no compatibility to said colorant medium, and (3) a colorant (A) having an affinity to the colorant medium but no or little affinity to said liquid organic compound, in which said colorant (A) is dissolved or dispersed in the colorant medium and the colorant medium containing the colorant (A) is additionally dispersed in the liquid organic compound.
Claim 2
Dependent Claim 87 words
A colored oil which comprises (1) a colorant medium being one selected from the group consisting of water, alcohols, cellosolves, ketones, and ethers , (2) a liquid organic compound having no compatibility to said colorant medium, and (3) a colorant (A) having an affinity to the colorant medium but no or little affinity to said liquid organic compound, in which said colorant (A) is dissolved or dispersed in the colorant medium and the colorant medium containing the colorant (A) is additionally dispersed in the liquid organic compound.
Claim 3
Dependent Claim 27 words
The colored oil according to Claim 1 in which the liquid organic compound is at least one selected from the group consisting of hydrocarbons, fluorohydrocabons and esters.
Claim 4
Dependent Claim 27 words
The colored oil according to Claim 1 or 2 in which the colorant medium containing colorant (A) is dispersed in the liquid organic compound with a surfactant.
Claim 5
Dependent Claim 22 words
The colored oil according to any one of preceding Cliams in which the liquid organic compound is colored with a colorant (B).
Claim 6
Dependent Claim 22 words
The colored oil according to any one of preceding Cliams in which the liquid organic compound is colored with a colorant (B).
Claim 7
Dependent Claim 26 words
The colored oil according to Claim 4 in which the colorant (B) is a pigment and is dispersed in the liquid organic compound with a surfactant.
Claim 8
Dependent Claim 19 words
The colored oil according to Claim 4 or 5 in which the colorant (B) is a fine magnetic particle.

References Cited (Backward Citations)

DE1670406B Cited
DE2603918B2 Cited
EP0041140A2 Cited

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